Artificial-breathing apparatus.



1. H. DRAGER.

ARTIFICIAL BREATHING APPARATUS.

APPLICATION FILED NOV- 5, I912.

Patented Apr. 20, 1915.

3 SHEETS-SHEET Fig. '1

J. H. DRAGER. ARTIFICIAL BREATHING APPARATUS.

APPLACATION FILED NOV. 5, 1912.

Patented Apr. 20, 1915.

3 SHEETS-SEEP: 2.

J. 'H. DRAGER.

ARTIFICIAL BREATHING APPARATUS.

APPLICATION FILED NOV. 5, 1912.

QSHEETS-SHEET 3.

' I 1 I a 719m 8 m Z1 l e Patented Apr; 20, 1915.

1:1) STATES PATENT onion.

.voHANN nnmarcn 'nmicna, on LuBEcK, GERMANY, ,AssIeNoR 1:0 THE FIRM or nniennwnam HEINR. & nnmvmnnlicnn, or L'UBECK, GERMANY.

ARTIFICIAL-BREATHING APPARATUS.

Specification of Letters Patent.

Original application filed October 1, 1908, Serial No. 455,718. Divided and this application filed November 5,1912. Seria1No.729,673.

To all whom it me concern.- I

Be it known t at I, JOHANN HEINRICH DRKGER, a subject of the Emperor of Germany, and resident of Liibeck, in the Ger-v man Empire, have invented certain new and useful Improvements in Artificial-Breathing Apparatus, of which the following is a specification, and is a division of my application for which Letters Patent of the United States were granted January 7, 1913, under No. 1,049,346,

The present invention relates to improvements in methodsand apparatus for. artificially causing people to breathe. By the aid of a breathing apparatus air or some other suitable, gas 18 forced into the breathing organs'of the body and then drawn out again by suction in a way similar to natural breathing. A paratus of this kind. known heretofore di ers from the present apparatus inasmuch as in the present'apparatus' the air or gas conducting means for the alternate connectionwith the breathing organs are so arranged that the same gas driving means is used both for producing the inhaling as well as the exhaling. -The pipes used are connected with a pressure and suction device in a manner to secure a reliable operation.

In thedrawings similar letters refer to snmlar parts.

.Figure 1 is an elevation of an apparatus constructed according to this invention.

ing valve 0,

Fig. 2 isa front view of the same partly'in section. Fig. 3 is a plan.- Figs. 4 and 5 are diagrammaticalviews of the air or gas conducting means. Figs. 6, 7, 8 and 9 are diagrammatica'l views of modifications of the last named means.- Figs. 10 to 12 are elevations of an apparatus in three positions for operating the modification shown in Figs. 6 and 7.

In the apparatus shown in Figs. 1 to 5 a designates an oxygen (or other gas) flask having as usual an outlet valve b and reducwhich by means-of piping herein'after described'is connected with a mask 8.

The reducing valve 0 1s provided with an e ector or nozzle dfrom which two pipes f and e lead to a valve for instance a fourway cock or valve z'as shown. 'The latter is preferably connected with a breathingmask s by a flexible pipe 9 and is provided with a short pipe h leading out into the open air.

The mask 8 may be dispensed with as. the

pipe 9 may be held in the mouth, or nose pieces may be provided. Thus the gas ejecting from the nozzle (1 under pressure passes Patented Apr.2, 119115.

either with the pipe f or with "the pipe (3.. i

The result is that the breathing organs of the person to whom the mask is attached are alternately. given oxygen (or gas) ejected from the opened valve 6 by the nozzle (1 together with air by the pipes 15., e, f, g or the bad-air is drawn from them by way of pipes g, e, f and 72,.

he change of position of the cock may be effected by any suitable means, for instance a motor may be provided to oscillate the cock. In the construction shown in Figs. 2 and 3 the motor comprises a clockwork ;0 for rotating a shaft 1', to which is fixed a cam disk m. A lever l is pivotally connected with a stud 0 and is provided with a pin 1, which projects into the cam slot n of the disk m. The lever Z is connected clearly shown in Figs. 4 and 5.

As may be seen there is not a special ejector forthe inhaling and a special ejector 95 y for; the exhaling, but both operations are carried out by one single nozzle, which operates in connection with pipes f and e.-

- In the construction described above it will be preferable to'make the flexible pipe lead.

ing-to the mask as short or small as possible enter the .mouth again. However it is gen- 10o .so as to allow very little air breathed out to a p 1 erally advantageous and frequently neces- I sary to use pipes that are notftoo long or too small. In the modifications shownin Figs. 6 to 9 two flexible pipesare shown one g for the inhaling and the other 9 for the exhaling.

In the modific'ation'shown in Figs. 6 and7 ed to direct said air out of the pipe through the pipes e and f are connected with an one of said openings and thereby create a open ended cylinder k having a piston rod t suction through the other opening, and a carrying three pistons, which may bebrought branch pipe communicating with one of said into two positions. In the position shown in openings and adapted' to be connected with Fig. 6 the left hand space between the pisthe mouth of a human being for the purpose tons connects the-pipes e and 7, so as to specified.

allow a mixture of air and oxygen to be 3. In an apparatus for generating artififorced into the pipe 9'. and in the position cial respiration, a pipe forming a complete place in the pipe 9.

shown in Fig. 7 the right hand space becircuit and having branches therein, means tween the pistons connects the pipes e and to supply air under pressure to said pipe in f m such a way that a sucking action takes the direction of said branches, and a valve In the modification shown in 8 and tion of the pipe with one of said branches 9 whichis similar to that shown in Figs. 4: and the other portion ofthe pipe with the and 5, the cook 1? is so formed that it shuts other branch, and thereby create a pressure ofi either the pip'e'g' or the pipe g.- The of air in one branchand a suction in the efl'ect is the same as describedwith reference other branch. to-the Figs. 6 and 7. 4. In an apparatus for generating artifi- The pistons 23' shown in Figs. 6 and 7 may cial respiration,a pipe forming a complete be driven by acam-disk m, shownvin Figs. circuit, a branch in the pipe opening into 10, .11 and 12, Said disk has a stud'n', which the air, a secondbranch adapted to be conprojects into a slot at of a link Z, pivotally nected with the mouth of a human being, a connected with the piston rod 2?.- When the nozzle in said pipe for supplying compresse disk m is rotated by means of a motor or air thereto in the direction of said branches, clockwork, not shown, the pipes f and e a valve in said pipe adapted to simultaare connected alternately with pipes g and neously open one branch and close the other 9, as above described. The disk m may be to the air under pressure, whereby the esprovided with a notch m, which may be encape of air from the pipe into one branch gaged bya projection u on a pawl u, as will create a suction in the other branch.

- shownm Fig. 12, which is acted upon by a 5. In an apparatus for generating artifivided for convenience.

spring a, and which maybe withdrawn from cial respiration means for supplying gas un- Y this engagement at will by a hand operated der pressure a circulation pipe in connection screw w acting oh the tail of the pawl. with said means, a nozzle in said pipe, cen- When the link Z is in the position shown in trally arranged within the pipe and adapted Fig. 12 the movement of the piston rod i to cause a pressure in front and a sucklng can be effected by hand, a knob :12 being proaction in the pipe behind the front part of I claim: tan'ce from the nozzle, a branch in the pipe '1- In an apparatus for generating artifiopening into the air and controlled by the -cial respiration, a pipe forming a complete valve-two more branches in the pipe so concircuit and'having openings therein, means trolled by the valve that one of these two to supply air un er pressure to said pipe branches is connected with the pressure part In the direction of said openings, means of the pipe or the second of these tWo adapted to direct said air out of the pipe branches is connected with the suction part through one of said openings and thereby of the pipe, the other of the two branches create a suction through the other opening. being closed at that time.

" JOHANN HEINRICH DRAGER.

2. In an apparatus for generating ar c al respiration, a pipe forming a complete circuit and having openings therein, means Witnesses: to supply air under pressure to said pipe in CHARLES HARRY BOEGKINER,

\ the direction of said openings, means adapt- JOHN WuLF.

arranged to simultaneously connect one por- 65 said nozzle, a valve in the pipe at a s- V 

